Input/output backplane



FIG. 1 is a perspective view of an input/output backplane showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear side elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a right side elevational view thereof.

The left side elevational view of the design is identical to the right side elevational view FIG. 6. 

The ornamental design for an input/output backplane, as shown and described. 